Gearing



(No Model.) 2 Sheets-Sheet 1.

- F. H. RICHARDS GEARING.

No. 480,671. Patented Aug. 9, 1892. 4

(No Model.) 2 Sheets-Sheet 2.

F. H. RICHARDS. GBARING.

No. 480,671. Patented Aug. 9, 1892.

mm eases.- lnvenzor:

ms PETERS cm, PNOTQ'LITNCL, wasmnmou, o. c.

UNITED STATES PATENT OFFICE.

FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO I/VALTERWOOD, OF PHILADELPHIA, PENNSYLVANIA.

GEARING.

SPECIFICATION forming part of Letters Patent No. 480,671, dated August9, 1892. Application filed March 24, 1892. Serial No. 426,211. (Nomodel.)

To all whom it may concern.-

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inGearing, of which the following is a specification.

This invention relates to gearing for imparting an intermittent rotarymovement to to one shaft from another continuously-revolving shaft.

The improved gearing herein described is adapted for use in connectionwith the stop mechanism for turret-lathes described in my 5 priorapplication, Serial No. 412,865, filed November 23, 1891.

In the drawings accompanying and forming a part of this specification,Figure 1 is a side elevation of spur-gearing embodying my presentinvention. Fig. 2 is an end elevation of the same as seen from the lefthand in Fig. 1. Figs. 3 and 4 are views similar to a portion of Fig. 2,illustrating the operation of the gearing. Fig. 5 is a plan view, and

Fig. 6 a side elevation, of bevel-gearing embodying mypresent invention.Figs. 7 and 8 are similar views of the gear-wheels as seen from the lefthand in Fig. 6 and illustrate the operation of this form of the gearing.

o Similar characters designate like parts in all the figures.

The framework for supporting the shafts carrying the gear-wheels may beconstructed in any convenient manner to meet the re- 3 5 quirements ofany particular case. In Figs.

1 and 2 the framework consists of the baseplate B and the uprights 10and 12. The shaft C is shown journaled in two bearings, formed one ineach of said uprights. The

0 shaft D is shown journaled in the bearing 14,

formed on the upright 12, the two shafts being set parallel. Thegear-wheels 2 and 4, of similar construction and in the present instanceof different diameters, are shown fixed on the shafts C and D,respectively. Each gear-wheel is furnished with two series of teeth orcogs, the teeth of one series being opposite the spaces of the otherseries. The entire number of said teeth in the driven wheel,

which in the present instance is supposed to be the wheel 4, should ofcourse be equal to the number of intermittent movements made during therevolution of said wheel, which number in the present instance is six.On the wheel 2 one set of cogs are designated by 20 20 20 and thealternating set are designated by 20 20 20, the two sets or series beingarranged side by side, as will be understood by comparison of Figs. 1and 2. On the wheel 4 the two corresponding sets of teeth or cogs aredesignated by 30 30 30 and by 3O 30 30 respectively. The cogs of thedriving-wheel 2 are elongated, being of the form of segmental ribs, aswill be understood from comparison of Figs. 1 to 4, inclusive, andoperate after the manner of cam-faces upon the corresponding cogs of thedriven wheel 4.

The operation of the described gearing is illustrated in Figs. 2, 3, and4, representing successive positions of the two gear-wheels, which turnin the direction of the arrows shown thereon. In Fig. 2 the gear 2 issupposed to be revolving While the wheel 4 is stationary. During thisperiod of the opera- 7 5' tion of the gearing the segmental cog 20 ofthe driving-wheel slides against the ends of the cogs 3O 30 of the wheel4, as shown in Fig. 2. As the driving-wheel advances to the positionshown in Fig. 3, the segmental cog 8o 20 of the driving-wheel passesfrom under the driven-wheel cog 30*, while the driving-wheel cog 20strikes the intermediate driven-wheel cog 30, and through this drivesforward the driven wheel to the position shown in Fig. 4, when saiddriving-cog 20 passes under the two successive cogs 30 and 30*, as shownin Fig. 4, thus holding the driven Wheel firmly in this positionone-sixth of a revolution in advance of its position in Fig. 3. At thistime the alternating driven-wheel cog 3O stands in the space between thedrivingwheel cogs 20 20 as shown in Fig. 4. In this manner thecontinuous movement of the driving-wheel successively turns and locks 5the driven wheel.

My invention is applicable not only to spurgearing, but also tobevel-gearing, as illustrated in Figs. 5 to 8, inclusive. In Figs. 5

and 6 the framework for carrying the gearing consists of the base B andthe bearing N. The vertical shaft 0', corresponding to the shaft 0 ofFigs. 1 to 4, is journaled at its lower end in the base, while the shaftD corresponding to the shaft D of Figs. 1 to 4, is journaled in saidbearing N.

The beveled driving-wheel 5 corresponds with the wheel 2 of Figs. 1 to 4and the beveled driven wheel 6 corresponds with the driven wheel 4 ofsaid figures. Said beveled driving-wheel has two series of segmentalcogs, of which one series is designated by- 50 50 50, while the otherseries is designated by 50 50 50*, the teeth or cogs of one series beingset opposite the spaces of the other series after the same manner ofthose of the gear-wheel 2, hereinbefore described. The beveled drivenwheel 6 is provided with two corresponding series of cogs, of which oneseries is designated by 60 60 60, while the other series is designatedby 60 60 60". The mode of operation of this form of the gearing is thesame in principle as the operation of the gearing shown in Figs. 1 and4. In Fig. .7 the driving-wheel segmental cog 50 is shown bearingagainst the two successive driven-wheel cogs 60" and 60, theintermediate driven-wheel cog 60 of the other series 0t driven-wheelcogs standing in the clear space between the driving-wheel cogs 50 and50, as indicated by dotted lines in Fig. 7. In Fig. 8 the wheels areshown advanced to a succeeding position, the movements being in thedirection of the arrows shown thereon. In this position two adjacentcogs 60 60 of the other set of driven-wheel cogs bear against the faceof the driving-wheel cog 50, as shown in Fig. 8, the intermediatedriven-wheel cog 60 standing in the clear space between thedriving-wheel cogs 50 50 It should be observed in connection with thegearing shown in Figs. 5 to 8 that the driving-wheel cogs are ofsegmental form and of a considerable length relative to the heightthereof, while the driven-wheel cogs are re- 45 duced substantially tothe form of'gear-teeth; but this modification of form is an incidentmerely of the modified arrangement of the parts and does not altertheprinciple of or the essential character of the gearing.

Having thus described my invention, I claim- 1. The improved gearingherein described, consisting in the combination, with the driving-wheelhaving two series of alternating 55 cogs and spaces set with the cogs ofone series opposite the spaces of the other series, of a driven wheelhaving corresponding cogs and spaces and meshing with the driving-wheel,substantially as set forth.

2. The improved bevel-gearing herein described, consisting in thecombination, with a bevel driving-wheel having two series of alternatingcogs and spaces, the cogs of one series being set opposite the spaces ofthe other series, of the bevel driven wheel having two correspondingseries of cogs and spaces, the cogs of one series being set opposite thespaces of the other series and meshing with the bevel driving-wheel,substantially as set 7o forth.

FRANCIS H. RICHARDS.

Witnesses:

HENRY L. RECKARD, EMMA G. FOWLER.

